TP can be challenging but the presets make it relatively easy. In this case you would add a standard emitter preset and the move along spline preset. Then it’s just a matter of dragging your particle object into the emitter preset’s geometry field, dragging your spline into the move along spline preset’s spline field, and playing with the parameters until you get what you want. No need to interact directly with TP or Xpresso at all.
You also need to add a TP Particle Geometry object to your scene. This can all be done in the space of a couple minutes.